2008 BMW Z4 3.0SI COUPE belt

Reference
At a glance
Controls
Driving tips
Mobility
57
triggering of the airbag restraint system, have
the testing, repair, removal, and disposal of air-
bag generators executed only by a BMW center
or a workshop that works according to BMW
repair procedures with correspondingly trained
personnel and has the required explosives
licenses. Unprofessional attempts to service
the system could lead to failure in an emer-
gency or undesired airbag activation, either of
which could result in personal injury.<
Warning notices and information about the air-
bags can also be found on the sun visors.
Automatic deactivation of the
passenger airbags
An analysis of the impression in the passenger
seat cushion determines whether and how the
seat is occupied. The front and side airbags for
the passenger are activated or deactivated by
the system accordingly.
The indicator lamp in the center console
shows the current status of the passen-
ger airbags, deactivated or activated, refer to
Status of passenger airbags below.<
Before transporting a child on the pas-
senger seat, observe the safety and han-
dling instructions under Transporting children
safely, refer to page36.
Adolescents and adults sitting in certain posi-
tions could inadvertently deactivate the front
and side airbags on the passenger side; the
indicator lamp for the passenger airbags comes
on. In such cases, the passenger should change
his or her sitting position so that the passenger
airbags are activated and the indicator lamp
goes out. If the passenger airbags cannot be
restored to the desired status despite the pas-
senger changing his or her seat position, use
the key switch to activate or deactivate the pas-
senger airbags, refer to page36. Do not attach
seat covers, seat cushion padding, ball mats or
other items to the passenger seat unless they
are specifically recommended by BMW. Do not
place any items under the seat which could
press against the seat from below. Otherwise a
correct analysis of the seat cushion is not
ensured.<
Status of passenger airbags
The indicator lamp for the passenger airbags
shows the functional status of the passenger's
front and side airbags in accordance with
whether and how the passenger seat is occu-
pied. The indicator lamp shows whether the
passenger airbags are activated or deactivated.
>The indicator lamp comes on as intended
when a child in an appropriate child-
restraint system is detected on the seat.
The front and side airbags for the passen-
ger are not activated.
>The indicator lamp does not come on as
long as a person of sufficient size and in a
correct sitting position is detected on the
seat. The front and side airbags for the pas-
senger are activated.
>The indicator lamp does not come on if the
seat is empty. However, the front and side
airbags for the passenger are not activated.
Operational readiness of the airbag
system
With the ignition key in position 1 or higher, the
warning lamp comes on briefly to indicate that
the entire airbag system and the belt tensioners
are operational.

Wheels and tires
86
Z4 Coupe 3.0si
Tire coding
Understanding the lettering on the tire sidewall
makes it easier to identify and choose the cor-
rect tires.
Tire size
Speed code letter
Q = up to 100mph or 160km/h
T = up to 118mph or 190km/h
H = up to 131mph or 210km/h
V = up to 150mph or 240km/h
W = up to 167mph or 270km/h
Y = up to 186mph or 300km/h
Tire Identification Number
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.DOT code:
Tire age
The date on which the tire was manufactured is
indicated by the code on the sidewall:
DOT … 5005 indicates that the tire was manu-
factured in week 50 of the year 2005.
BMW recommends the replacement of all tires
every 6 years at the latest, even if a tire usage of
10 years is possible.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA
Temperature A
DOT Quality Grades
Tread wear
Traction AA A B C
Temperature A B C
Tire sizePressure specifications in psi/kPa
All pressure specifications in the table are
indicated in psi/kilopascal with cold tires,
cold = ambient temperature
225/45 R 17 91 W
225/45 R 17 91 H/V M+S33/230 39/270
Front: 225/45 R 17 91W
Rear: 255/40 R 17 94 W33/230
––
39/270
Front: 225/40 R 18 88 W
Rear: 255/35 R 18 90 W33/230
––
39/270
You will find more information about permissible loads and weights on page113.
e.g.
Nominal width in mm
Aspect ratio in Ξ
Radial belt construction
Rim diameter in inches
Load rating,
not on ZR tires
Speed code letter, in
front of the R on ZR tires225/50 R1692 V
e.g.
Manufacturer's code
for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 5005

Replacing components
102
Jacking points
The jacking points are located at the positions
indicated in the illustration.
Vehicle battery
Maintenance
The battery is completely maintenance-free.
This means that the original electrolyte will nor-
mally last for the service life of the battery under
moderate climatic conditions. Your BMW cen-
ter will be happy to advise you if you have any
questions concerning the battery.
Indicator lamp
The indicator lamp lights up:
The battery is no longer being charged.
The alternator drive belt is defective or
there is a malfunction in the charging circuit of
the alternator. Have the system checked as
soon as possible.
If the drive belt is defective, pull over and
switch off the engine immediately to pre-
vent overheating and serious engine damage.
If the onboard supply voltage drops to a very
low level, increased steering effort may also be
necessary.<
Charging the battery
Charge the battery in the vehicle only when the
engine has been switched off. Connections,
refer to Jump-starting on page104.
Battery disposal
After changing a battery, have the used
battery disposed of by your BMW center or bring it to a recycling point. Maintain the bat-
tery in an upright position for transport and stor-
age. Secure the battery against tilting when
transporting.<
Power loss
After a temporary power loss, the functioning of
some equipment may be limited and require ini-
tialization. Individual settings are also lost and
must be reset:
>Seat memory
The positions must be stored again, refer to
page32.
>Clock must be reset, refer to page49.
Fuses
Do not attempt to repair a burned fuse or
replace it with a fuse having a different
color or amperage rating. To do this could
cause a fire in the vehicle as a result of circuit
overload.<
You will find the fuses and information on their
respective allocation behind the glove compart-
ment.
1.Open the glove compartment.
2.Press the lock on the left, arrow1.
3.Press the lock on the right, arrow2.
4.Swing the glove compartment down.
Spare fuses and plastic tweezers for grasping
the fuses are found in the onboard tool kit; refer
to page98.

Reference
At a glance
Controls
Driving tips
Mobility
117
B
Backrests, refer to Seat
adjustment31
Backup lamps
– bulb replacement101
Bandages, refer to First-aid
kit104
Bar, refer to Towing
methods106
Battery102
– charging102
– disposal102
– indicator/warning
lamp12,102
– jump-starting104
– power supply
interruption102
– remote control18
Being towed106
Belts, refer to Safety belts33
Belt tensioner, refer to Safety
belts33
Beverage holders69
Blower, refer to Air flow
rate63,66
BMW Homepage4
BMW Maintenance
System96
Bottle holders, refer to
Beverage holders69
Brake assist, refer to Dynamic
Brake Control DBC51
Brake fluid95
– indicator/warning
lamp13,95
– low level95
Brake Force Display56
Brake hydraulics, refer to
Brake system95
Brake hydraulic system
– indicator/warning lamp13
Brake lamps
– brake force display56
– bulb replacement101
– indicator lamp, defective
bulb13Brake pads76
– break-in procedures74
– warning lamp76
Brake pad wear indicator
– brake pads76
– indicator/warning lamp13
Brake rotors76
– brakes76
– break-in procedures74
Brakes
– ABS51
– brake fluid95
– brake pads
76
– braking safely76
– break-in procedures74
– indicator/warning
lamps13,52
– parking brake41
Brake system95
– brake fluid95
– brake pads76
– break-in procedures74
– disc brakes76
– indicator/warning lamp13
Breakdown service, refer to
Roadside Assistance103
Breaking in the clutch74
Breaking in the differential,
refer to Engine and
differential74
Break-in procedures74
Bridging, refer to Jump-
starting104
Bulb changing, refer to Lamps
and bulbs98
Bulb replacement, refer to
Lamps and bulbs98
Buttons on the steering
wheel11
C
California Proposition 65
warning5
Can holders, refer to Beverage
holders69
Capacity
– cargo bay, refer to
Weights113Car battery, refer to Vehicle
battery102
Car care, refer to the Caring
for your vehicle brochure
Care, refer to the Caring for
your vehicle brochure
Care products, refer to the
Caring for your vehicle
brochure
Cargo bay23
– capacity113
– emergency release23
– floor panel98
– increasing capacity23
– opening and closing21,22
– opening from inside the
vehicle21,22
– opening from the outside21
– roll-up cover70
Cargo loading
– stowing cargo77
– vehicle77
Car jack
– jacking points102
Car keys, refer to The key
set18
Carpet care, refer to the
Caring for your vehicle
brochure
Car phone, refer to the
separate Owner's Manual
Car radio, refer to the separate
Owner's Manual
Car wash, refer to the Caring
for your vehicle brochure
Catalytic converter, refer to
Hot exhaust system75
CD changer, refer to Owner's
Manual for Radio/Onboard
Computer
CD operation, refer to Owner's
Manual for Radio/Onboard
Computer
Center console, refer to
Around the center
console14
Center high-mount brake
lamp, bulb replacement101

Everything from A to Z
120 Equipment scope, refer to the
Service and Warranty
Information Booklet for US
models, Warranty and
Service Guide Booklet
ESP Electronic Stability
Program, refer to DSC
Dynamic Stability
Control51
Event Data Recorders97
Exhaust system, refer to Hot
exhaust system75
Exterior mirrors34
– adjusting34
– automatic dimming
feature34
– automatic heating34
– folding in and out34
External audio device68
Eyeglasses compartment69
Eyes, tow-starting and towing
away105
F
False alarm
– refer to Avoiding
unintentional alarms24
– refer to Switching off an
alarm24
Fasten safety belts, refer to
Safety belts33
Filter
– refer to Microfilter64
– refer to Microfilter/activated-
charcoal filter67
Fine wood, refer to the Caring
for your vehicle brochure
First aid, refer to First-aid
kit104
First-aid kit104
Flat tire
– Flat Tire Monitor53
– refer to Changing a
wheel101
– refer to Tire condition87
– Run-Flat Tires88
– Tire Pressure Monitor54Flat Tire Monitor FTM53
– flat tire warning53
– indicator/warning lamp53
– initializing the system53
– snow chains90
– system limits53
Floods, refer to Driving
through water76
Floor covers, carpets, refer to
the Caring for your vehicle
brochure
Floor mats, refer to the Caring
for your vehicle brochure
Fog lamps60
– indicator lamp13
Footbrake, refer to Braking
safely76
For your own safety5
Front airbags56
FTM, refer to Flat Tire
Monitor53
Fuel
– average consumption50
– capacity, refer to
Capacities114
– display48
– quality83
– refer to Average fuel
consumption50
– refer to Fuel
specifications83
– tank capacity83
Fuel display, refer to Fuel
gauge48
Fuel filler door, refer to Gas
cap82
Fuel level
– refer to Fuel tank capacity83
Fuel tank capacity, refer to
Capacities114
Fully automatic convertible
top
27
Fuses102
G
Gas cap82
Gasoline, refer to Fuel
specifications83Gasoline gauge, refer to Fuel
gauge48
Gear indicator, automatic
transmission with
Steptronic42
Gear lever
– automatic transmission with
Steptronic42
– manual transmission42
Gearshifts
– automatic transmission with
Steptronic42
– manual transmission42
Glove compartment68
Gross weight, refer to
Weights113
H
Halogen lamps
– replacing bulbs99
Handbrake, refer to Parking
brake41
Hands-free microphone71
Hardtop, refer to the separate
Owner's Manual
Hardtop preparation78
Hazard warning flashers14
Headlamp control,
automatic59
Headlamp flasher44
– indicator lamp12
Headlamps
– bulb replacement99
– care, refer to the Caring for
your vehicle brochure
– cleaning45
– cleaning system, washer
fluid46
– cover99
– glass, care, refer to the
Caring for your vehicle
brochure
– washer reservoir, refer to
Washer fluid reservoir46
– washer reservoir volume,
refer to Capacities114

Reference
At a glance
Controls
Driving tips
Mobility
121
Head restraints32
– removing32
– safe seating position30
Heated
– mirrors34
– rear window63,67
– seats33
Heating
– mirrors34
– rear window63,67
– seats33
Heavy loads, refer to Cargo
loading77
Height, refer to
Dimensions111,112
Height adjustment
– seats31
– steering wheel35
High beams60
– bulb replacement99
– headlamp flasher44
– indicator lamp12
High temperatures75
Holders for beverages69
Homepage of BMW4
Hood91
Horn10
Hot exhaust system75
Hydraulic Brake Assistant,
refer to Dynamic Brake
Control DBC51
Hydraulics, brake95
Hydroplaning75
I
Ice warning, refer to Outside
temperature warning48
Identification mark
– Run-Flat Tires88
– tire coding86
– tires88,89
Ignition, refer to Ignition
switched on40
Ignition key positions, refer to
Ignition lock40
Ignition keys, refer to The key
set18
Ignition lock40Imprint2
Inclines76
Indicator/warning lamp12
– airbags57
– alarm system24
– automatic transmission with
Steptronic43
– brakes13
– coolant temperature49
– DSC51
– DTC52
– engine oil level92
– engine oil pressure92
– engine temperature49
– fasten safety belts33
– Flat Tire Monitor53
– passenger airbags37
– reserve48
– Tire Pressure Monitor55
Indicator and warning lamps,
overview12
Individual vehicle
– equipment, refer to Your
individual vehicle5
Inflation pressure, refer to Tire
inflation pressure84
Inflation pressure monitoring,
refer to
– Flat Tire Monitor53
– Tire Pressure Monitor54
Initializing
– after power supply
interruption102
– Flat Tire Monitor FTM53
– windows25
Inspection49
Instrument cluster12
Instrument lighting60
Instrument panel, refer to
Cockpit10
Instrument panel, refer to
Instrument cluster12
Interior lamps61
– remote control19
Interior motion sensor
24
Interior rearview mirror34
– automatic dimming
feature34Interior temperature
adjusting63,66
Interlock, refer to Steering
locked40,42
Intermittent
– operation of the wipers45
Interval
– display, service49
J
Jack101
Jacking points102
Jets, refer to
Ventilation63,67
Jump-starting104
K
Key Memory18
Keys18
Keys, refer to The key set18
Key switch for passenger
airbags36
Kickdown43
Knee airbags56
Knock control83
L
Lamps59
Lamps and bulbs98
LATCH, child-restraint
mounting system38
Leather care, refer to the
Caring for your vehicle
brochure
LEDs Light-emitting
diodes98
Length, refer to
Dimensions111,112
License plate lamps, bulb
replacement101
Light-alloy wheels, care, refer
to the Caring for your vehicle
brochure
Light-emitting diodes
LEDs98

Reference
At a glance
Controls
Driving tips
Mobility
123
Onboard computer, refer to
Computer50
Onboard tool kit98
On-call services, refer to
Roadside Assistance103
Opening
– from inside21
Opening and closing the
vehicle
– at the door lock20
– from inside21
– from outside19
– with the remote control19
Outlets, refer to
Ventilation63,67
Outside temperature display
– changing units of
measure50
– in the onboard computer50
Outside temperature
warning48
Overheated engine, refer to
Coolant temperature49
P
Paintwork, refer to the Caring
for your vehicle brochure
Parking brake41
– indicator lamp13,41
Parking lamps, refer to
Parking lamps/Low
beams59
Parking lamps/Low beams59
– bulb replacement99
Parking lock, refer to P
Parking42
Passenger airbags
– deactivation37
– reactivation37
Passenger-side mirror tilt
function34
Pathway lighting60
Permissible axle load, refer to
Weights113
Permissible gross weight,
refer to Weights113
Pinch protection system
– windows25Placing the vehicle in storage,
refer to the Caring for your
vehicle brochure
Plastic, refer to the Caring for
your vehicle brochure
Pollen
– refer to Microfilter64
– refer to Microfilter/activated-
charcoal filter67
Power
– windows, refer to
Windows24
Power convertible top27
Power failure102
Power output, refer to Engine
data110
Power steering, electric56
Power windows
– initializing25
Pressure, tires84
Pressure monitoring, tires,
refer to
– Flat Tire Monitor53
– Tire Pressure Monitor
TPM54
Protective function, refer to
Pinch protection system25
R
Radio, refer to the separate
Owner's Manual
Radio navigation, refer to the
separate Owner's Manual
Radio remote control key,
refer to Master keys with
remote control18
Rain sensor45
Reading lamps61
Rear lamps
– bulb replacement101
– indicator lamp, defective
bulb13
Rearview mirror, refer to
Mirrors34
Rear window defroster
– air conditioning63
– automatic climate control67Recirculated-air mode
– air conditioning63
– automatic climate control67
Recirculating the air, refer to
Recirculated-air
mode63,67
Reclining seat, refer to
Seats30
Refueling82
Releasing
– hood91
Remaining distance, refer to
Cruising range50
Remote control19
– luggage compartment lid20
– malfunction20
– tailgate20
Repairs
– refer to Maintenance
system96
Replacement key, refer to
New keys18
Replacement of tires88
Replacing lamps, refer to
Lamps and bulbs98
Replacing tires, refer to Wheel
and tire replacement88
Reserve
– indicator lamp, refer to Fuel
gauge48
Restraint systems
– for children37,38
– refer to Safety belts33
Reverse gear
– automatic transmission with
Steptronic43
– manual transmission42
Roadside Assistance103
Roadside parking lamps60
Rod antenna, refer to the
Caring for your vehicle
brochure
Roller-blind cover70
Rope, refer to Towing
methods106
RSC Runflat System
Component, refer to Run-
Flat Tires88

Everything from A to Z
124 Rubber parts, refer to the
Caring for your vehicle
brochure
Runflat System Component
RSC, refer to Run-Flat
Tires88
Run-Flat Tires88
– changing a tire87,89
– changing a wheel101
– flat tire53,55
– Flat Tire Monitor53
– tire inflation pressure84
– Tire Pressure Monitor54
– winter tires89
Runflat Tyres, refer to Run-
Flat Tires88
S
Safe seating position30
– with airbags30
– with head restraints30
– with safety belts30
Safety belts33
– care, refer to the Caring for
your vehicle brochure
– damage34
– indicator/warning lamp33
– reminder33
– safe seating position30
Safety knobs, doors, refer to
Locking the doors from
inside21
Safety systems
– airbags56
– Antilock Brake System
ABS51
– driving stability control
systems51
Safety tires, refer to Run-Flat
Tires88
Saving
– fuel74
Screw thread, tow fitting106
Seat Belt Reminder, refer to
'Fasten safety belts'
reminder33
Seat heating33
Seat memory32Seats30
– adjusting mechanically31
– adjusting the sports seat31
– heating33
– memory, refer to Seat
memory32
– power adjustment31
– safe seating position30
– saving positions, refer to
Seat memory32
Securing, locking the vehicle
– from inside21
– from outside19
Selector lever42
– automatic transmission with
Steptronic42
– lock, refer to Range
selection, shiftlock42
Selector lever positions
– automatic transmission with
Steptronic42
Service, refer to Roadside
Assistance103
Service, refer to Service and
Warranty Information
Booklet for US models,
Warranty and Service Guide
Booklet for Canadian
models96
Service and warranty6
Service interval display49,96
Sheet ice, refer to Outside
temperature warning48
Shifting gears
– automatic transmission with
Steptronic42
– manual transmission42
Shiftlock, refer to Range
selection42
Shift paddles on the steering
wheel43
Side airbags56
Side marker lamps, front
– bulb replacement100
Side marker lamps, rear101
Side turn signal indicators,
bulb replacement100
Side windows, refer to
Windows24Signal horn, refer to Horn10
Slipstream deflector, refer to
Wind deflector70
Smokers' package, refer to
Ashtray69
Snow chains90
Socket, On-Board Diagnosis
OBD96
Socket, refer to Connecting
electrical appliances70
SOS, refer to Emergency
call103
Spare
– fuses102
– key18
– wheel, refer to Run-Flat
Tires89
Spare fuses, refer to
Fuses102
Special oils, refer to Approved
engine oils94
Special wash program, refer to
the Caring for your vehicle
brochure
Specified engine oils, refer to
Approved engine oils94
Speed
– Run-Flat Tires53,55
– winter tires89
Speedometer12
Sport program
– automatic transmission with
Steptronic43
– Dynamic Driving Control44
Sports seat31
Spray nozzles, refer to
Cleaning windshield46
Stability control, refer to
Driving stability control
systems51
Starting, refer to Starting the
engine40
Starting difficulties
– jump-starting104
– temperature41
Starting with a flat battery,
refer to Jump-starting104
Status of this Owner's Manual
at time of printing5